航天员失重环境下运动策略与效能分析

航天员在空间执行任务过程中由于受到空间微重力环境的影响,其运动的协调性以及平衡性均会与地面环境下的表现有所差异.以研究失重环境下航天员运动特点为目标,对航天员姿态调整策略进行动力学分析,并对运动过程人体效能进行评价.具体而言,在无外力/力矩驱动下,人体必须依靠四肢按一定的协调运动策略才能实现对躯干姿态的主动控制.而运动...

Analysis of motion strategies and performance of astronauts in weightless environments

The coordination and balance of astronauts′ motions during missions in space are different from those in the ground environment due to the microgravity environment. The characteristics of astronauts′ movement in microgravity environment were studied, the dynamics of astronaut attitude adjustment strategy was analyzed, and the human performance in the process of movement was evaluated. Specifically, in the absence of external force/moment actuation, the human body must rely on the limbs to achieve the active control of torso posture according to a certain coordinated motion strategy. On the other hand, in order to analyze the motion strategies, the dynamics principles of human whole body movement process need to be studied. Firstly, the dynamics model of human multi rigid body system was established based on Newton Euler method, and secondly ,the closed loop control system based on MBDyn software and computational moment method was established, which can simulate and calculate the complex motion process of human body. Finally, using the above theory and system, the feasibility of the human body relying on the limbs to actively adjust the posture according to a certain motion strategy was verified, and the dynamics of each joint was obtained, which provides some theoretical support for the design of astronauts′ motion in the future mission.